Abstract
Antarctica is a key element in Earth's geodynamic and climatic systems. Nevertheless, on the eve of the 50th anniversary of the International Geophysical Year, we lack fundamental geologic and geophysical data from the deep interior of this vast continent. Meager exposures record the 3500‐million‐year history of a continent that participated in the formation and breakup of both the Rodinia and Gondwana super‐continents. It continues to be tectonically active today although its kinematic relationship to the global plate circuit and its role as sub‐ strate to the world's major ice sheets remain in question.
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